<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>为每个边设置不同的边框</title>
</head>
<style>
    p {
      border-style: dotted solid;
    }
    </style>
    <p>文字在边框内</p>
</html>